Locking device for emergency exit-doors.



H. G. VOIGET.

LOCKING DEVICE FOR EMERGEN'CY EXIT DOORS.

APPLICATION FILED NOV. 4, 1912.

Patented Juiy 29, 1913.

xii/0f) H. G..VOIGHT.

LOCKING DEVICE FOR EMERGENCY EXIT DOORS.

APPLICATION FILED NOV. 4, 1912.

Patented July 29. 1913.

LET 2.

3 SHEETS-SH 42 5 50 a ts H. G. VOEGET.

LOOKING DEVICE FOR EMERGENCY EXIT 0003s.

APPLICATION FILED NOVA, 1912 Eatented July 29, 1913.

3 SHEETSSHEBT 3.

iq wwwas H a We 044 v 50/61 ea rnn r onnion.

HEN..-Y G. VOIGHT, OF NEW BRITAIN, CONNECTICUT.

a Map Specification of Letters Patent.

Patented July29,1913.

npplication filed November 4, 1912. Serial No. 729,329.

To all uni n12? may concern i T known that I, l- ENRY Gr. Velour, oi the United States. residing at- Kew itain, Hartford county, State of (J ni-rec have invented certain new and useful. iaprovementn in Locking Devices for Emergency Exit-Doors, of which the tollowin s a tall, clear. and exact descripiuvcn ion relatee to locks, and parto it strczillcd panic bolts for exit doore such as are commonly the exit doors of public buildings, and other places where crowds are liabie to congregate. In this type of door, there grave danger, in the event of panic, that pressure againet a door will cause the ts to'so bind that the door cannot be ad even thougn it should swing out-- wardt The purpose of the panic bolt" is to prevent such a condition, the operating parts of the lock being so constructed that the weight of the panic-stricken crowd against the door is utilized to operate the bolt and to permit the door to freely open.

My present invention is designed to provide an improved construction of panic bolt '1. tneat wherein said bolt is freely operable from the interior side of the door and whereby a knob and spindle are provided for operating the bolt from the exterior side of the door, a cylinder lock mechanism being carried by the l operate to dead lock the operation of said bolt from the exterior through said knob and (Hyliltlltt. this combination of parts hei .ixed to concentrate the operaling so that it mav be embodied in a compo.iiivelv narrow case which may be applied to doors with narrow stiles. Furthermore by my invention the operating parts are contained in two asnemblcd units which are opcrativclv connected by the mere connection ol' the units when applied to den of the door. 'lhesc. and other s will be apparent from the de laiiec. tnmilicalio'; following in connection with the acco irving drawings Forming diment Figure ,l is a sectional showing. in elevation, lllilt thereto. Fri. ie

llll'l )l) and spindle and being arranged to ow in elevation of the inner attached parts secured thereto. Fig. 3 is a. vertical sectional view through the lock case detached. taken on the line 33 ol Fig. 2. Fig. et is a similar view taken on the line 4l of Fig. Fig. 5 is a view in rear elevation of the. lock case with its rear platc removed. Fig. 6 represents in top plan and edge elevation the dead locking slide carried by the lock case. Fig. 7 represents in top plan and edge elevation the blocking plate carried by the locking slide. Fig. 8 is a detail in top plan and edge elevation of the tumbler bar carried by eaid locking slide. Fig. 9 is a view in elevation of the interior oi the lock case with the parts removed therefron'i. the back plate of said case being removed. Fig. 10 is a view in side elevation of the hinged operating lever carried by the lock case. Fig. it in an end view of the parts shown in Fig. 10. Fig. 12 shows in detail in front and edge elevation,

the bolt operating toggle member controlled through said operating lever. Fig. 13 is a detail in front and edge elevation of one of the toggle links connected to the bolt member. Fig. 14 in a detail in front and side elevation of the cylinder lock controlled roll-back tor actuating the dead locking mechanism. Fig. 15 is a detail in end and side elevation of a second bolt operating i'oggle member controlledthrough the exterior hnob.

Referring to the drawings by numerals, 1 indicates a portion ot a door to which a bolt is to be applied. 2 indicates a lock case provided with a back plate 3. this casing being intended For application to the interior side ot the door. l lxtcndinn' l'rom within this casing at opposite sides thereof arc bolt members 4' and 5. being, ol the Cremornc type and arranged to project, one into the top ot a door casing and the other into the sill. .\n v suitable form of boll head may be employed. in the drawings l have shown only the shank r body ol' each bolt. since in the presentv case the invention does not con ern the specilic construction of the bolt. heads.

(3 designates a hub formed centrally ol the c ae 2 units interior, and T designates openings l'ormed in opposite ends of the casing in line with the hub, the bolt men'ibers 4- and 5 extending through these openings. The inner ends of these bolt members which are contained within the case rest. on pairs of parallel ribs 8 formed in the case and are guided by pairs of spaced lugs 9 located adjacent these ribs.

t0 designates an elongated opening in the front of the lock case 2, arms ll extending outwardly from the front of said -asc to said openin Between these arms an operating lever arm 12 is journaled, this lever in form being substantially a bell-crank lever and being pivotal-1y mounted to bring its arm 13 within the case. The end of this arm is preferably shouldered or reduced as at 14.

I5 designates a bar carried at one end by the operating lever 12-, this bar being shown as broken away, but in practice extending transversely across the inner side of a door and provided with a suitable support for its opposite end, such, for example, as a support similar to that for the lever member 12.

The bolt members at and 5 are of the type which is normally pressed outwardly by a spring or analogous means so that they are normally forced into the sockets in the door casing and sill. The bar 15, when pressed downwardly and .iinvardly, as by a crowd,

operates the arm 13 of the lever member 12 to retract these bolts so that the door may be freely opened. The mechanism for effecting this operation of the bolts is as follows. Journa-led on the hub (5 of the case is an oscillating toggle member '16 having an actuating arm 17 extending therefrom to a point adjacent and above the end of the arm 13 of the operating lever. An aperturedlug 18 extends from the opposite side of this toggle member and a spring [9 connected thereto and to the lock case normally tends to move this toggle member to so position its actuating arm 17, as shown in Fig. 5 of the drawings. Projecting from the inner face of this toggle member 16 are pivot pins 20 and guide pins 21 adjacent thereto, these pins carrying the inner ends of toggle link members 22, the outer ends of these links being provided with pins 23 projecting transversely from said ends. The inner ends of the bolt members 4 and 5 are bifurcated forming complemental arms 24 at the inner end of each bolt. These arms 24 are each provided with an elongated slot 25 therein, the pins 23 of the toggle links 22 extending into-the slots 25 in the alined arms 21 at opposite ends of the case. A second oscillating toggle member 26 is provided in alinement with the first toggle member, this second member having a hub portion 27 extending therefrom and provided with flattened sides. The inner face of this second toggle member is provided with oppositely arranged pivot pins 28, and, adjacent one edge, is flattened to form a straight edge 29, the purpose of which will be hereinafter described. A

lore 30 extends centrally through the fiatlrncd hub 27 and second toggle member 26,

likewise having and at its inner end is provided with an enlargement 31 forming a hub seat. Pivot-ally mounted at their inner ends on the pins 28 are toggle members 32 similar in construction to the link members these links 32 pins :33 versely from the outei ends into the slots 25 of the alined arms 24 at the inner ends of the bolt members 4 and 5, the arms 2% being, of course those to which the links 22 are not connected. The. toggle members 16 and 2G and their links are spaced apart, and between these toggle members is mounted a rollback 34 having hubs 35 projecting from either side thereof and seating in the hub seat 31 of toggle member 26 and in ahub seat 36 formed in the inner face of toggle member 16, the space between the two toggle members being suiticient to afford clearance between their faces and the faces of this roll-back so that the latter may be operated. A squared bore 37 extends centrally through the roll-back 3 c and its lmb members 35, this bore being designed to receive the squared end of a spindle 3S operatively connected to a cylinder lock mechanism hereinafter described, this spindle extending through and being freely rotatable within the bore 30 of toggle member 20.

I have heretofore referred to the straight edge 29 of the second toggle member 26. This straight edge is designed to cooperate with the following blocking device carried within the lock case so as to block or dead lock this toggle member from operating the bolt members t and 5. Mounted and suitably guided within the lock case and lying within the plane of the roll-back Ell is what I will term a dead locking slidejb) provided with a recess 10 in its edge forming abutments 41 adapted to be engaged by said rollback. Pivotally mounted on the pin -12) carried by this slide is a tumbler 42 having 5 a strike lug 44c projecting therefrom out within the recess 40 and carrying a spring 45 resting against a stud t6 on the slide 39 and normally tending to force this tumbler outwardly to bring its strike lug in the plane of the recess 40. The lower end of this tumbler 42 is formed with shouldered a butulents 47 and 48.- In the normal projected position of the tumbler, a shoulder 27' engages the under face of a stud 9 and iioids the dead locking slide against n'iovement. blocking plate 49 is carried by the dead locking slide on the shouldered studs 50 thereon. this blocking plate lying in the plane of toggle members 26 and being spaced from the ante! face of the slide and tumbler by these studs and having a straight edge extension 51. Vhen the dead locking slid and its block ing plate are moved, this straight edge 51 positioned to abut againd thi-strzight edge 29 formed by the llatlcn l s l of the toggle member 2b to dead l clv thi toggle member against bolt operating movement. \Vhen the roll-back 34 is operated to dead lock the toggle membei QG, it engages the strike lug it of the tumbler by moving the tumbler inwardly and moving its shoulder 47 away from stud 9. The roll-back then engages one of the abutments 41 on the slide and moves said slide up to bring its straight edge 51 against the straight edge 29 of the toggle member 26, dead locking said toggle member as aforesaid. When the slide reaches this dead locking position, the shoulder 48 of the tumbler snaps over the upper face of the stud 9 and holds the slide against reverse movement until the rollback 3% is moved' in the opposite direction to retract the t-um bler and move the slide back to its first position.

Cooperating with the lock case 2 and its parts and mounted on the opposite side of the door, is an escutcheon plate carrying a, knob 53 and its spindle 5- The back plate 3 of the lock case 2 is provided with socket studs extending therefrom, these socket studs having apertures extending therethrough and having said apertures enlarged adjacent their outer ends to form seats so for the ends of dowel pins 57 carried by the escutcheon. plate 52, these dowel pins being formed with threaded bores.

designates screws inserted througlrthe lock case 22 from the exterior side thereof and fitting through the bores in the socket members 55 and having a tl'ireaded engagement with the interior of the dowel pins 57 so that the parts of the lock can se securely held together.

The spindle 54 of the knob 52-) is provided with a bore. the outer end of which is sha ed to engage the flattened hub 27 of the second toggle member QGwhcn the cscutcheon plate 5 3 and its attached parts are secured to the lock case in the manner heretofore described.

A cvlinder lock mechanism 5?) (indicated in dolicd lines in Fig. l) is carried by the knob 51; and the spindle 3% controlled thereby (Xl lHlp' through the bore of the knob spindle and is freely rotatable therein when the key f the lock is inserted and turned. this spindle 3 as ln-retot'ore stated. extending through the bore I'l ot the second toggle member 24' and having its ends squared to seat in the squared bore. 30 ot the roll-hack to dead lock the toggle member "36 against movement, as t have heretofore explained.

it will he noted that the lock case and its allachcd parts forms one assembled unit and that the mere act. ot attaching the escutcheon plate with its knob, spindle and associated parts, to the lock case serves to automatirally connect the knob and cylinder lock spindles with their operative parts in the lock case. The parts of the lock case can, therefore. be assembled and regulated in the factory and no further regulation is necessary, it being merely necessary to secure the parts to opposite sides of the door, suitable bores, of course, being provided in the door through which the knob spindle, dowel pins and the socket members of the back plate of -the lock may extend.

The operation of the dead locking slide to (load lock the operation of the knob controlled toggle member ill has already. been explained. When the knob has not been dead locked against operation, it may be turned to oscillate its toggle member 20, thereby moving the toggle links 32 inwardly and withdrawing the bolt members T and 3 from their sockets. .\s I have be tore stated, the bolt members are of the type that are normally pressed outwardly by a spring or otherwise so that when projected, the pins of the toggle links of both toggle members rest at the inner ends of the slots hen the links are noved through the knob to retract the bolt members 'land 5, the inner ends of these bolt men'ibers move freely without disturbing the toggle member 16 and its links 22, this being permissible by reason of the fact that the slotted arms ll of these bolts ride freely over the pins of these links, the toggle members. therefore, being independently operable. \Vhen the knob is released, the springs operating the bolts 4 and 5 project said bolts and return the links and the tog gle member 26 to their normal position. The bolts are operated from the interior of the door through the operating lever 12 when the bar 1: is moved inwardly. The a tuating arm 17 of the toggle member 16 is normally positioned just above the inner end of the arm '12) ot' the operating lever. When this operating lever, therefore, is actuated to move its inner end upwardly, this cild will engage the actuating, arm 17 of the toggle member and oscillate it about its hub, this movement drawing the links 2". inwardly and retracting the bolts so that'thealoor may be freely opened from the interior. hen the pressure on the opcrating, lever 12 is removed, the spring of the bot "members 4 and 5 will return the parts to their normal position through the link members 22. I prefer, however, to employ the spring i as this absolutely insures the proper positioning of the actuating arn it relative to theinrer end of the operalii g lever 19. It will be noted that when the parts are retracted through the operating lever 12, the movement of the inner end of the bolts does not ali'ect the log-- gle member 16 through its links 32, as the slotted arms 2% of these bolts which cooperate with these links, merely ride Over their pins 233. The dead locking of a toggle member 26. therefore, through the dead locking slide will not interfere with the retraction of the bolts by the operating lever spindle, a imvvable dead locking device cured to one side of the door, complcmental device on the same side of said door, bolt 12 from the interior of the door so that the bolts are always freely operable from the interior whether or no the exterior knob has been dead locked against bolt retracting op eration by means of the cylinder lock mechanism carried thereby.

By using a cylinder lock in conjunction with the knob, I am enabled to arrangethe operating parts substantially on the Same axis and in very compact relation so that the parts may be embodied within a com pai-atively narrow case and may, therefore, be used with doors having narrow stiles.

While I have herein described and shown a specific embodiment of my invention, it is obvious that various strnctu al changes may be made within the spirit of the invention zand the scope of the appended claims.

lVhat I claim, therefore, and desire ,to secure by Letters Patent is:

1. In a panic bolt for doors, a casing, complemental oppositely arranged boi "rembers therein, two spaced concentricall arranged actuating means in operative connection with said bolt members and arranged for independent operation thereof, manually controlled operating devices arranged -on opposite sides of the door and each in operative connection with a bolt actuating means, oneof said .devices embodying a knob and spindle, means adapted to be positioned to dead lock one of said bolt actuatilng means, a cylinder lock mechanism carried by-said knob and spindle, and means controlled therethrough and positioned between and in alinement with said spaced actuating means, whereby said dead locking means may bemoved into and out of dead locking position.

2. In a panic bolt for doors, a casing, eoniplemental oppositely arranged bolt members therein, two spaced concentrically arranged actuating means in operative connection with said bolt members and arranged for independent operation thereof, manually controlled operating devices arranged on opposite sides of the door and each in operative connection with a bolt actuating means one of said devices embodying a knob and mounted in said casing and cotipcrating with the knob controlled bolt actuating means todcad lock the same, a cylinder lock mechanism carried by said knob and spindle, and means positioned between and concentric with said spaced bot actuat ng means ar- 'anged to be operated through said c lindcr lock to move said dead locking device into and out of dead locking position.

3. In a panic bolt fogdoors, a ca ing seoppositely arranged bolt actuating members projecting therefrom, a manually operable operating mechanism Within said casing in operative connection with said manuallyoperable device, a second and independent opinder lock and said blocking device and positioned between said bolt operating mechanisms adapted to be operated to dead lock said knob and spindle against boltoperating actuation and without interference with the operation of said bolt through the manually controlled device on the opposite side of the door.

4. In a panic bolt for doors, two assembled units, one of said units comprising a casing adapted to be secured to one side of the door, complemental oppositely arranged bolt actuating members. projecting therefrom, mechanism within said casing for operating said bolt members, said mechanism being operable from the casing side Ofrillfi door, a second and independent bolt operating mechanism within said casin and a blocking device within said casing operative to block the operation of said second and independent bolt opbrating mechanism; and the other oft-said units comprising a plate adaptedtd be secured to the opposite side 0 the door provided with means for connec tion to said casing. a knob and spindle. carried by said plate, said spindle being adapted for operative connection with said second bolt operating connection upon the connection of said plate and casing, and a cylinder lock mechanism carried by said knob spindle and adapted to be likewise operativcly connected to said blocking device by the connection of said plateand casing, said first bolt operating mechanism being. operable from the opposite side of the door inde'. pendcntly of said second mechanism and blocking device.

5. In a .pai'iicbolt for doors, a casing, two oppositely arranged bolt members projecting therefrom. two bolt-operating toggles within said casing, one of said toggles being operable independently of the other, a manually controlled operating device on one side of the door in operative connection with one of said operating toggles, a. knob and spindle on the opposite side of the door in operative connoclioa with the second bolt-operating toggle, a blocking device within said casing adapted to dead lock said second toggle against operation by said knob and spindle, and a cylinder lock mechanism carried by said knob and spindle proxided with keycontrolled means in operative connection with said blocking device, and operative to dead lock said knob and spindle against toggle-operation without interference with the independent operation of said first boltoperating toggle by said manually controlled device or? the opposite side of the door.

(3. in a panic bolt for doors, a casing secured to one side of the door, two oppositely arranged bolt'members projecting therefrom, two independent toggles within said casing operatiyely and independently connected with said bolt members, a manually operable device connected to said casing and in operative connection with one of said boltpperating toggles, a plate secured to the opposite side of the door and detachably connected tprthe casing on the side of the door opposite thereto, a knob and spindle carried by said plate with said spindle adapted to be operat'irely connected to said second bolt-operating toggle. and a cydinder lock me hanisn'i carried by said knob and spindle adapted for operative connection to the blocking device in said casing and operati e to dead lot-k said second toggle without intertcrenee with the independent op oration of said first bolt operating toggle by the manually controlled device on the opto side ol the door.

4. in a panic bolt for doors, a casing, complemental oppositely arranged bolt actuating members extending therefrotm-two separate manually controlled operating means for arrangement on oppos te sides of a door, one u said means comprising a knob and spindle. two independent bolt retracting means within said asing in axial alincmcnt', each operativcly connected to one of said manually controlled t'vpcrating means. a cylinder lot-k mechanism carried by said knob and spindle, a blocking derice au-ried by said rasing for said knob-operated bolt-rctratiug means. and operative connections between said blocking device and said lock meclmnism. s connections being located between and in alincment with said bolt retracting means.

8. In a panic bolt for doors, a casing, a bolt member projecting therefrom, two spaced toggles within said casing operatively and independently connected to said boltmember and arranged in substantially parallel relatiom'a manually operable device on one side of the door in operative connection with one of said toggles, a knob and spindle on the opposite side of the door in operative connection With the other of said toggles, a blocking device Within said casing adapted to be positioned to dead lock the operation of said second toggle, a cylinder lock mechanism carried by said knob and spindle, and means controlled thereby and positioned between said toggles and adapted to be actuated to operate said blocking device.

S). In a panic bolt for doors, a casing, a bolt member projecting therefrom, two oscillating bolt actuators withih said casing and in operative and independent connection with said bolt, one of said actuators being provided with an arm projecting therefrom, a manually operable controlling lever positioned on one side of the door to engage said arm and adapted to more the same to ope ate said bolt, a knob and spindle positioned 'onthe opposite side of the door and operatively connected to said second oscillating actuator and adapted to actuatethe same to operate the bolt member independently of said first actuator, a dead locking means in said casing adapted to be actuated to dead lock said second actuattn' against; operation by said knob and spindle, a cylinder lock mechanism carried by said knob and spindle, and key-controlled means con nccted therewith and adapted to be operated to actuate said dead locking means to dead lock said second actuator without interference with the indepcmleut operation of said bolt member through said lever and first mentioned actuator.

HENRY G. VOtGll'l.

\V it nosses GWJ'INDULINE A. Jackson, EDWARD l3. ALLWG. 

